Evaporative Emissions (Evap) Control System Monitor And Readiness Code; Air Fuel Ratio (A/F) Sensor Monitor And Readiness Code - Honda Civic 2002-2003 Service Manual

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Evaporative Emissions (EVAP) Control
System Monitor and Readiness code
NOTE:
• All readiness code are cleared when the battery is
disconnected or when the ECM is cleared with the
OBD II scan tool or Honda PGM Tester,
• The enable criteria must be repeated if the intake air
temperature (lAT) drops lower than 36°F (20°C) from
its value at engine start up.
Enable Criteria
• At engine start up, ECT and IAT are higher than 32°F
(DoC) , but lower than 95°F (35°C),
• At engine start up, the ECT and IAT are within 12°F
(rC) of each other.
Procedure
1, Connect the scan tool to the vehicle's data link
connector (DLC), and bring up the tool's generic
OBD II mode,
2, Start the engine,
3, Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise, After about
2,5 miles (1,6 km), the readiness code should
switch from incomplete to complete.
4, If the readiness code is still setto incomplete, check
for a temporary DTC, If there is no DTC, one or
more of the enable criteria were probably not met;
repeat the procedure,
Air Fuel Ratio (A/F) Sensor Monitor and
Readiness Code
NOTE:
• Do not turn the ignition switch off during the
procedure.
• All readiness codes are cleared when the battery is
disconnected or when the ECM is cleared with the
OBD II scan tool or Honda PGM Tester.
Enable Criteria
ECT at 140°F (60°C) or higher.
Procedure
1, Connect the scan tool to the vehicle's data link
connector (DLC), and bring up the tool's generic
OBD II mode,
2, Start the engine,
3. Test-drive the vehicle under stop-and-go conditions
with short periods of steady cruise, During the
drive, decelerate (wirh the throttle fully closed) for
5 seconds, After about3,5 miles (2,2 km), the
readiness code should switch from incomplete to
complete.
4, If the readiness code is still set to incomplete, check
for a temporary DTC, If there is no DTC, the enable
criteria was probably not met; repeat the procedure.
Air/Fuel Ratio (A/F) Sensor Heater Monitor
Readiness Code
NOTE: All readiness codes are cleared when the battery
is disconnected or when the ECM is cleared with the
OBD II scan tool or Honda PGM Tester.
Procedure
1, Connect the scan tool to the vehicle's data link
connector (DLC)' and bring up the tool's generic
OBD II mode,
2, Start the engine, and let it idle for 1 minute, The
readiness code should switch from incomplete to
complete,
3, If the readiness code is still set to incomplete, check
for a temporary DTC, If there is no DTC, repeat the
procedure .
(conl'd)
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